CN114320741A - Power control method and equipment of wind generating set - Google Patents
Power control method and equipment of wind generating set Download PDFInfo
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- CN114320741A CN114320741A CN202011058738.5A CN202011058738A CN114320741A CN 114320741 A CN114320741 A CN 114320741A CN 202011058738 A CN202011058738 A CN 202011058738A CN 114320741 A CN114320741 A CN 114320741A
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/028—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power
- F03D7/0284—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling wind motor output power in relation to the state of the electric grid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F03—MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
- F03D—WIND MOTORS
- F03D7/00—Controlling wind motors
- F03D7/02—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor
- F03D7/0276—Controlling wind motors the wind motors having rotation axis substantially parallel to the air flow entering the rotor controlling rotor speed, e.g. variable speed
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/101—Purpose of the control system to control rotational speed (n)
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2270/00—Control
- F05B2270/10—Purpose of the control system
- F05B2270/103—Purpose of the control system to affect the output of the engine
- F05B2270/1032—Torque
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/70—Wind energy
- Y02E10/72—Wind turbines with rotation axis in wind direction
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- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Wind Motors (AREA)
- Control Of Eletrric Generators (AREA)
Abstract
A power control method and equipment for a wind generating set are provided. The power control method comprises the following steps: when a power-limiting operation instruction or a power-discharging operation instruction is received, controlling the rotating speed and the torque of a generator of the wind generating set based on the optimal rotating speed torque curve and the specific rotating speed torque curve; and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
Description
Technical Field
The present disclosure relates generally to the field of wind power technology, and more particularly, to a method and apparatus for controlling power of a wind turbine generator system.
Background
The main logic of the primary frequency modulation strategy of the wind generating set is according to the mode of the set limiting power. When the unit limits the power to the speed change section, if the action of limiting the power is continuously executed, the set rotating speed and the set torque of the unit can be simultaneously changed. Especially for a large impeller unit, when a unit receives a primary frequency modulation power-up instruction after limiting power to a speed change section, because the inertia of an impeller is large, if the ambient wind speed is small, the rotating speed is slowly increased, and the response time of primary frequency modulation is influenced.
Disclosure of Invention
An exemplary embodiment of the present disclosure is to provide a power control method and apparatus of a wind turbine generator set, which can effectively control the rotation speed and torque of a generator in response to a power-limited operation command or a power-discharged operation command.
According to an exemplary embodiment of the present disclosure, there is provided a power control method of a wind turbine generator system, the power control method including: when a power-limiting operation instruction or a power-discharging operation instruction is received, controlling the rotating speed and the torque of a generator of the wind generating set based on the optimal rotating speed torque curve and the specific rotating speed torque curve; and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
Optionally, when the power-limited operation instruction is received, the step of controlling the rotation speed and the torque of the generator of the wind generating set based on the optimal rotation speed torque curve and the specific rotation speed torque curve comprises: when a power-limiting operation instruction is received, determining that the power is required to be limited to a first power value based on the received power-limiting operation instruction; determining a point A on a specific rotating speed torque curve corresponding to the first power value; and controlling the rotating speed and the torque by taking the rotating speed value and the torque value of the point A as target values.
Alternatively, the step of controlling the rotation speed and the torque comprises, with the rotation speed value and the torque value at the point a as target values: when the current running state is normal and the current rotating speed value is greater than the rotating speed value of the point A, controlling the rotating speed and the torque to simultaneously drop and directly reach the point A, or controlling the rotating speed and the torque to simultaneously drop to a specific rotating speed and torque curve and then change to the point A along the specific rotating speed and torque curve, or controlling the rotating speed to drop to the rotating speed value of the point A and then controlling the torque to drop to the torque value of the point A; when the current running state is normal and the current rotating speed value is smaller than the rotating speed value of the point A, controlling the torque to fall onto an equal power curve between the point A and the point B, and then controlling the rotating speed and the torque to change to the point A along the equal power curve; and when the current rotating speed value is equal to the rotating speed value of the point A, controlling the torque to be reduced to the torque value of the point A, wherein the point B is a point of the optimal rotating speed and torque curve, and the corresponding power value is the first power value.
Alternatively, the step of controlling the rotation speed and the torque comprises, with the rotation speed value and the torque value at the point a as target values: when the current running state is in a limited power running state or a power discharge running state and the current running state is at any point C on a specific rotating speed torque curve, controlling the rotating speed and the torque to change from the point C to a point A along the specific rotating speed torque curve; when the current running is in a limited power running state or a power discharge running state and the current running is on an equal power curve between a point C and a point on an optimal rotating speed torque curve, controlling the rotating speed and the torque to simultaneously drop to a specific rotating speed torque curve and then change to a point A along the specific rotating speed torque curve; when the current power-limiting operation state or the power-discharging operation state is in, and the current operation is at a point on the optimal rotating speed torque curve, the rotating speed and the torque are controlled to simultaneously drop and directly reach the point A, or the rotating speed and the torque are controlled to simultaneously drop to a specific rotating speed torque curve and then change to the point A along the specific rotating speed torque curve, or the rotating speed is controlled to drop to the rotating speed value of the point A and then control the torque to drop to the torque value of the point A; when the current running is in a power-limited running state or a power-discharging running state and the current running is at a point on an optimal rotating speed and torque curve, wherein the rotating speed value is smaller than a point A, the torque is controlled to be reduced to an equal power curve between the point A and a point B, and then the rotating speed and the torque are controlled to be changed to the point A along the equal power curve; and when the current running state is in a limited power running state or a power discharge running state and the current running state is at a point on the optimal rotating speed torque curve, the rotating speed value is equal to the point A, the torque is controlled to be reduced to the torque value of the point A, wherein the point B is a point on the optimal rotating speed torque curve, and the corresponding power value is the first power value.
Optionally, when the power-off operation instruction is received, the step of controlling the rotation speed and the torque of the generator of the wind generating set based on the optimal rotation speed and torque curve and the specific rotation speed and torque curve comprises: when a power amplification operation instruction is received, determining that the power amplification is required to reach a second power value based on the received power amplification operation instruction; determining a point D on a specific rotating speed torque curve corresponding to the second power value; and controlling the rotating speed and the torque by taking the rotating speed value and the torque value of the point D as target values.
Optionally, the step of controlling the rotation speed and the torque by taking the rotation speed value and the torque value at the point D as target values comprises: when the current power amplifier is in a normal operation state and the whole power amplifying process has reserve energy, controlling the rotating speed and the torque to change to a point D; when the current state is in a normal operation state and no reserved energy exists after the control rotating speed and the torque are changed to any E point on a specific rotating speed torque curve in the power discharging process, the control rotating speed and the torque stay at the E point, the control torque target value is increased to the optimal rotating speed torque curve from the E point, then the control torque target value and the rotating speed target value are increased to a F point along the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are changed to a D point along an equal power curve from the F point, wherein the F point is a point of a second power value corresponding to a power value on the optimal rotating speed torque curve.
Optionally, the step of controlling the rotation speed and the torque by taking the rotation speed value and the torque value at the point D as target values comprises: when the current power limiting operation state or the power discharge operation state is in and the whole power discharge process has the stored energy, controlling the rotating speed and the torque to change to a point D along a specific rotating speed and torque curve; when the current power limiting operation state or the power discharging operation state is in, and in the power discharging process, no reserved energy exists after the control rotating speed and the torque are changed to any E point on a specific rotating speed torque curve, the control rotating speed and the torque stay at the E point, the control torque target value is increased to the optimal rotating speed torque curve from the E point, then the control torque target value and the rotating speed target value are increased to a F point along the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are changed to a D point along an equal power curve from the F point, wherein the F point is a point of a second power value corresponding to a power value on the optimal rotating speed torque curve.
Optionally, after the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limiting operation instruction is received, the method further comprises the following steps: when the wind speed is reduced when the wind power generator operates at the point A and a primary frequency modulation command is not received, the rotating speed and the torque are controlled to change from the point A to the point B along the equal power curve and then to reduce along the optimal rotating speed and torque curve, then the rotating speed and the torque are controlled to increase along the optimal rotating speed and torque curve to the point B and then to change to the point A along the equal power curve along with the increase of the wind speed, wherein the point B is a point of which the corresponding power value on the optimal rotating speed and torque curve is the first power value; and/or when the current operation is at the point A and a primary frequency modulation power-up instruction is received, determining that the power-up is required to reach a third power value based on the received primary frequency modulation power-up instruction; controlling the rotating speed to keep unchanged and controlling the torque to rise until the power rises to a third power value; and/or when the current operation is at the point A and the primary frequency modulation power reduction instruction is received, determining that the power needs to be reduced to a fourth power value based on the received primary frequency modulation power reduction instruction; controlling the rotating speed to keep unchanged and controlling the torque to decrease until the power decreases to a fourth power value; and/or when the power is in a limited power operation state before but cannot be maintained to operate at the point A, and a primary frequency modulation power reduction command is received, determining that the power needs to be reduced to a fifth power value based on the adjustment amount in the received primary frequency modulation power reduction command and the current power; the control speed is kept unchanged and the control torque is reduced until the power is reduced to a fifth power value.
Optionally, the power control method further includes: after the step of controlling the rotating speed to be kept unchanged and controlling the torque to rise until the power rises to a third power value, along with the reduction of the wind speed, controlling the rotating speed to be kept unchanged and controlling the torque to fall until the point A is returned, then controlling the rotating speed and the torque to fall along the optimal rotating speed and torque curve after the point A is changed to the point B along the equal power curve, and then controlling the rotating speed and the torque to rise along the optimal rotating speed and torque curve and then change to the point A along the equal power curve after the point B is changed along the equal power curve along the increase of the wind speed; and/or after the step of controlling the rotating speed to be kept unchanged and controlling the torque to drop until the power drops to a fourth power value, along with the drop of the wind speed, the rotating speed and the torque are controlled to drop along the optimal rotating speed and torque curve after being changed to the optimal rotating speed and torque curve along the equipower curve, and then along with the rise of the wind speed, the rotating speed and the torque are controlled to rise along the optimal rotating speed and torque curve to a point B and then are controlled to change to a point A along the equipower curve.
According to another exemplary embodiment of the present disclosure, there is provided a power control apparatus of a wind turbine generator set, the power control apparatus including: the control unit is used for controlling the rotating speed and the torque of the generator of the wind generating set based on the optimal rotating speed torque curve and the specific rotating speed torque curve when receiving the power limiting operation instruction or the power discharging operation instruction; and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
Optionally, the control unit comprises: the first target power value determining unit is used for determining that the power is required to be limited to a first power value based on the received power limiting operation instruction when the power limiting operation instruction is received; and the first rotating speed and torque control unit determines a point A on a specific rotating speed and torque curve corresponding to the first power value, and controls the rotating speed and the torque by taking a rotating speed value and a torque value of the point A as target values.
Optionally, the control unit comprises: the second target power value determining unit is used for determining that the amplification is required to be performed to a second power value based on the received amplification operation instruction when the amplification operation instruction is received; and the second rotating speed and torque control unit determines a point D on a specific rotating speed and torque curve corresponding to the second power value, and controls the rotating speed and the torque by taking the rotating speed value and the torque value of the point D as target values.
Optionally, the power control device is provided in a master controller of the wind power plant.
According to another exemplary embodiment of the present disclosure, a computer-readable storage medium is provided, in which a computer program is stored, which, when being executed by a processor, carries out the method of power control of a wind park as described above.
According to another exemplary embodiment of the present disclosure, there is provided a power control apparatus of a wind turbine generator set, the power control apparatus including: a processor; a memory storing a computer program which, when executed by the processor, implements the power control method of the wind park as described above.
According to the power control method and the power control equipment of the wind generating set, the power limiting operation instruction or the power discharging operation instruction can be effectively responded to control the rotating speed and the torque of the generator, in addition, a certain space is reserved for primary frequency modulation by effectively setting the rotating speed target value and the torque target value during power limiting and discharging, so that the unit can be directly completed through lifting torque during primary frequency modulation without changing the rotating speed, the primary frequency modulation instruction can be quickly responded, and meanwhile, the rotating speed change is small, and the power control method and the power control equipment have positive significance on the load of the unit.
Additional aspects and/or advantages of the present general inventive concept will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the general inventive concept.
Drawings
The above and other objects and features of the exemplary embodiments of the present disclosure will become more apparent from the following description taken in conjunction with the accompanying drawings which illustrate exemplary embodiments, wherein:
FIG. 1 shows a flow chart of a method of power control of a wind park according to an exemplary embodiment of the present disclosure;
FIG. 2 illustrates an example of a specific speed torque curve according to an exemplary embodiment of the present disclosure;
FIG. 3 shows a flow diagram of a method of limiting power in accordance with an example embodiment of the present disclosure;
FIG. 4 illustrates an example of a method of controlling speed and torque in response to a power-limited operating command in accordance with an exemplary embodiment of the present disclosure;
fig. 5 shows a flow chart of a method of power discharge according to an exemplary embodiment of the present disclosure;
FIG. 6 illustrates an example of a method of controlling speed and torque in response to a discharge operation command in accordance with an exemplary embodiment of the present disclosure;
FIG. 7 illustrates an example of a method of controlling rotational speed and torque after power limiting in accordance with an exemplary embodiment of the present disclosure;
FIG. 8 shows a block diagram of a power control apparatus of a wind park according to an exemplary embodiment of the present disclosure;
fig. 9 illustrates a block diagram of a control unit according to an exemplary embodiment of the present disclosure;
fig. 10 illustrates a block diagram of a control unit according to another exemplary embodiment of the present disclosure.
Detailed Description
Reference will now be made in detail to the embodiments of the present disclosure, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the like elements throughout. The embodiments are described below in order to explain the present disclosure by referring to the figures.
Fig. 1 shows a flow chart of a method of power control of a wind park according to an exemplary embodiment of the present disclosure.
Referring to fig. 1, when a power-limited operation command or a power-discharge operation command is received, the rotation speed and torque of the generator of the wind turbine generator set are controlled based on the optimal rotation speed torque curve and the specific rotation speed torque curve at step S10.
As an example, the optimal rotation speed torque curve is a characteristic curve of the generator, which indicates the optimal rotation speed and the optimal torque of the generator under different powers, and the wind turbine generator system operates on the optimal rotation speed torque curve when in a normal operation state rather than a power-limiting operation state.
The specific rotating speed torque curve is constructed based on an optimal rotating speed torque curve, specifically, for each point on the optimal rotating speed torque curve, a point which is on the equal power curve and takes the point as a starting point and meets a preset condition forms the specific rotating speed torque curve, wherein the preset condition is that a corresponding power value is lower than a power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
For example, the relationship between the optimal rotation speed torque curve and the specific rotation speed torque curve can be as shown in fig. 2, by way of example only, where the preset value is a preset proportion of rated power (e.g., 10% of rated power Pn), the point a on the optimal rotation speed torque curve has equal power to the point B on the specific rotation speed torque curve, and the power value corresponding to the point B (i.e., the rotation speed and the torque at the point B are the rotation speed value and the torque value) is 10% lower than the power value corresponding to the point on the optimal rotation speed torque curve where the rotation speed value is equal to the point B, and accordingly, the point C on the optimal rotation speed torque curve has equal power to the point D on the specific rotation speed torque curve, and the power value corresponding to the point D is 10% lower than the power value corresponding to the point on the optimal rotation speed torque curve where the rotation speed value is equal to the point D; the power value corresponding to the point F is lower than the power value corresponding to the point F on the optimal rotating speed torque curve by 10% of rated power.
As an example, the limited power operation command or the discharge operation command may be a chirp command, for example, the response time and settling time requirements for chirp are much slower than for chirp.
It should be understood that the power control method of the wind generating set according to the exemplary embodiment of the present disclosure is applicable to both the power-limited action when the power is less than or equal to the rated power, with the lowest possible power being 0; the method is also suitable for the power amplification action when the power is greater than or equal to 0, and the maximum power can be amplified to the rated power.
Fig. 3 illustrates a flow diagram of a method of limiting power in accordance with an exemplary embodiment of the present disclosure. The method may be performed in the step of controlling the rotation speed and torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power limit operation command is received when the step S10 is performed.
In step S101, when a power-limited operation instruction is received, it is determined that power limitation to a first power value is required based on the received power-limited operation instruction.
In step S102, a point B1 on the specific speed-torque curve corresponding to the first power value is determined.
The point a1 is a point B1 along the curve of the optimal rotational speed and torque corresponding to the constant power curve, that is, the power values corresponding to the points a1 and B1 are the first power values.
In step S103, the rotation speed and torque are controlled with the rotation speed value and torque value at point B1 as target values (i.e., set values).
Referring to fig. 4, in one embodiment, when currently in the normal operation state, step S103 may include:
when the current rotating speed value is greater than the rotating speed value at the point B1 (for example, the rotating speed value currently runs at the point C1 on the optimal rotating speed torque curve), the control rotating speed and the torque simultaneously drop to directly reach the point B1, or the control rotating speed and the torque simultaneously drop to a specific rotating speed torque curve and then change to the point B1 along the specific rotating speed torque curve (namely, the control rotating speed and the torque value at the point B1 are changed), or the control rotating speed drops to the rotating speed value at the point B1 and then controls the torque to drop to the torque value at the point B1 (namely, the rotating speed is controlled to drop firstly, and then the torque is controlled to drop);
when the current rotating speed value is less than the rotating speed value at the point B1 (for example, the rotating speed value currently runs at the point D1 on the optimal rotating speed and torque curve), the control torque is reduced to the isopower curve between the point B1 and the point A1, and then the rotating speed and the torque are controlled to change to the point B1 along the isopower curve (namely, the torque is controlled to be reduced firstly, and then the torque and the rotating speed are controlled simultaneously);
when the current rotation speed value is equal to the rotation speed value at point B1 (e.g., point E1, which is currently operating on the optimal rotation speed torque curve), the control torque is decreased to the torque value at point B1.
Referring to fig. 4, in another embodiment, when the current operating state is the power-limited operating state or the power-discharge operating state, step S103 may include:
when the current operation is performed at an arbitrary point F1 on the specific speed-torque curve (i.e., the current speed and torque are the speed and torque values at the point F1), the control speed and torque are changed from the point F1 to the point B1 along the specific speed-torque curve; for example, point F1 may be the limited power point at which it is currently located;
when the current operation is on an equal power curve between a point F1 and a point G1 on an optimal rotating speed torque curve (for example, the current operation is on a point H1 on the equal power curve), the control rotating speed and the torque are simultaneously reduced from the point H1 to the point B1 along the specific rotating speed torque curve;
when the current operation is carried out at a C1 point on an optimal rotating speed torque curve, the rotating speed value is greater than a B1 point, the rotating speed and the torque are controlled to simultaneously drop to a B1 point, or the rotating speed and the torque are controlled to simultaneously drop to a specific rotating speed torque curve and then change to a B1 point along the specific rotating speed torque curve, or the rotating speed is controlled to drop to the rotating speed value of a B1 point and then control the torque to drop to the torque value of a B1 point;
when the current operation is performed at a point D1 with the rotating speed value smaller than a point B1 on the optimal rotating speed and torque curve, the rotating speed and the torque are controlled to change to a point B1 along the equipower curve after the torque is controlled to drop to the equipower curve between a point B1 and a point A1;
when the current operation is at the E1 point, where the rotating speed value is equal to the B1 point, on the optimal rotating speed and torque curve, the control torque is reduced to the torque value at the B1 point.
It should be understood that the solid line with arrows in fig. 4 indicates actual variation trajectories (trends) of the rotation speed and the torque.
Fig. 5 illustrates a flowchart of a method of discharging power according to an exemplary embodiment of the present disclosure. It should be appreciated that the method may be performed in the step of controlling the rotational speed and torque of the generator of the wind turbine generator set based on the optimal rotational speed torque curve and the specific rotational speed torque curve when the discharging operation command is received when the step S10 is performed.
In step S201, when the power amplification operation instruction is received, it is determined that the power amplification is required to the second power value based on the received power amplification operation instruction.
In step S202, a point B2 on the specific speed-torque curve corresponding to the second power value is determined.
The point a2 is a point B2 along the curve of the optimal rotational speed and torque corresponding to the constant power curve, that is, the power values corresponding to the points a2 and B2 are the first power values.
In step S203, the rotational speed and the torque are controlled with the rotational speed value and the torque value at point B2 as target values.
Referring to fig. 6, in one embodiment, when currently in the normal operation state, step S203 may include:
when the whole power discharge process has the stored energy, controlling the rotating speed and the torque to change to a point B2;
when there is no reserve energy after the control rotational speed and torque change to any point C2 on the specific rotational speed torque curve during discharging, the control rotational speed and torque (i.e., the actual rotational speed value and the actual torque value) stay at the point C2, and the control torque target value is increased from the point C2 to the torque value at the point D2 on the optimum rotational speed torque curve (during which the rotational speed target value is kept unchanged), and then the control torque target value and the rotational speed target value are increased from the point D2 to the point a2 along the optimum rotational speed torque curve, and then the control torque target value and the rotational speed target value are changed from the point a2 to the point B2 along the equal power curve.
Referring to fig. 6, in another embodiment, when the current operating state is the power-limited operating state or the power-discharge operating state, step S203 may include:
when there is reserve energy throughout the discharge process, the control speed and torque (e.g., currently operating at power limit point E2) change along the specific speed-torque curve to point B2;
when no reserve energy exists after the control rotating speed and torque (for example, the control rotating speed and torque are changed from the operation at the power limit point E2 along the specific rotating speed torque curve) to any point C2 on the specific rotating speed torque curve in the power discharging process, the control rotating speed and torque stay at the point C2, the control torque target value is increased from the point C2 to the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are increased to the point A2 along the optimal rotating speed torque curve, and then the control torque target value and the rotating speed target value are changed from the point A2 to the point B2 along the equal power curve.
Referring to fig. 7, in one embodiment, after the step of controlling the rotation speed and torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limited operation command is received, when the current operation is at the power-limited point B1 (for example, the wind speed is high and there is reserve energy) and a primary frequency modulation command is not received, if the wind speed is first decreased and then increased, the control rotation speed and torque are changed from the point B1 along the equal power curve to the point a1 and then decreased along the optimal rotation speed torque curve as the wind speed is decreased, and then the control rotation speed and torque are increased along the optimal rotation speed torque curve to the point a1 and then changed along the equal power curve to the point B1 as the wind speed is increased.
Further, as an example, after the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limited operation command is received, when the operation cannot be maintained at the power-limited point B1 (for example, the wind speed is small and there is no reserve energy) and the primary frequency modulation command is not received, if the wind speed is decreased first and then increased, the control rotation speed and the torque are decreased along the optimal rotation speed torque curve after the power curve is changed to the optimal rotation speed torque curve along the wind speed decrease, and then the control rotation speed and the torque are increased along the optimal rotation speed torque curve and then changed to the specific rotation speed torque curve along the power curve along the optimal rotation speed torque curve along the wind speed increase.
Further, as an example, when the wind turbine is currently operating at the discharge point or is currently in the discharge operation state but cannot currently maintain the operation at the discharge point, the rotation speed and the torque may also be controlled with reference to the operation manner described above with reference to fig. 7 in the case where the primary frequency modulation command is not received and the wind speed first decreases and then increases.
Referring to fig. 7, in another embodiment, after the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limited operation command is received, when the current operation is at a point B1 and the primary frequency modulation power-up command is received, it is determined that the power-up to the third power value is required based on the received primary frequency modulation power-up command, the rotation speed is controlled to be kept unchanged and the torque is controlled to be increased until the power is increased to the third power value, that is, the rotation speed and the torque are controlled to be changed from a point B1 to a point I1. Further, as an example, after the control speed and torque are changed from the point B1 to the point I1, if the wind speed is first decreased and then increased, the control speed remains unchanged and the control torque is decreased until the wind speed returns to the point B1 (i.e., from the point I1 to the point B1) as the wind speed decreases, then the control speed and torque is changed along the equipower curve from the point B1 to the point a1 and then decreased along the optimal speed torque curve, and then the control speed and torque is increased along the optimal speed torque curve to the point a1 and then changed along the equipower curve to the point B1 as the wind speed increases.
Referring to fig. 7, in another embodiment, after the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limited operation command is received, when the current operation is at point B1 and a primary frequency-modulated power-down command is received, determining that power-down to a fourth power value is required based on the received primary frequency-modulated power-down command; the control speed remains unchanged and the control torque drops until the power drops to a fourth power value, i.e., the control speed and torque change from point B1 to J1. Further, as an example, after the control speed and torque change from the point B1 to the point J1, if the wind speed first decreases and then increases, the control speed and torque change along the equipower curve to the optimal speed and torque curve (i.e., the control speed and torque change from the point J1 to the point K1 along the equipower curve) and then decrease along the optimal speed and torque curve as the wind speed decreases, and then as the wind speed increases, the control speed and torque change along the equipower curve to the point a1 and then change along the equipower curve to the point B1.
Further, as an example, when the current operation is at the power discharge point, in the case where the primary frequency modulation command is received, the rotation speed and the torque may also be controlled with reference to the operation manner described above in conjunction with fig. 7.
In another embodiment, after the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the power-limiting operation instruction is received, when the wind turbine generator set is currently in the power-limiting operation state but cannot maintain the operation at the point B1 (for example, the wind speed is low and no energy is reserved), and when a primary frequency-modulated power-down instruction is received, the power-down-required value is determined to be the fifth power value based on the adjustment amount in the received primary frequency-modulated power-down instruction and the current power (in other words, the current power target value of the wind turbine generator set is hopped to the current actual power value to ensure that the wind turbine generator set does not have a hopping action); the control speed is kept unchanged and the control torque is reduced until the power is reduced to a fifth power value. Further, as an example, after the step of controlling the rotation speed to be constant and controlling the torque to decrease until the power decreases to the fifth power value, as the wind speed decreases, the control rotation speed and the torque decrease along the equal power curve to the optimal rotation speed torque curve, and then decrease along the optimal rotation speed torque curve, and as the wind speed increases, the control rotation speed and the torque increase along the optimal rotation speed torque curve to a1 point, and then change along the equal power curve to a B1 point. Further, as an example, when the power discharge operation state is currently in but the operation at the power discharge point cannot be maintained currently, the rotation speed and the torque may also be controlled with reference to the above operation manner in the case where the primary frequency modulation command is received.
Fig. 8 shows a block diagram of a power control device of a wind park according to an exemplary embodiment of the present disclosure.
As shown in fig. 8, the power control apparatus of a wind turbine generator set according to an exemplary embodiment of the present disclosure includes: a control unit 10.
Specifically, the control unit 10 is configured to control the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when receiving the power-limiting operation instruction or the power-discharging operation instruction; and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
Fig. 9 illustrates a block diagram of a control unit according to an exemplary embodiment of the present disclosure.
As shown in fig. 9, the control unit 10 may include a first target power value determination unit 101 and a first rotational speed torque control unit 102.
Specifically, the first target power value determining unit 101 is configured to, when a power-limited operation instruction is received, determine that power limitation to a first power value is required based on the received power-limited operation instruction.
The first rotational speed and torque control unit 102 is configured to determine a point B1 on a specific rotational speed and torque curve corresponding to the first power value, and control the rotational speed and the torque by using the rotational speed value and the torque value at the point B1 as target values.
As an example, when currently in the normal operation state, the first rotational speed and torque control unit 102 may perform the following operations to achieve control of the rotational speed and torque with the rotational speed value and the torque value at point B1 as target values:
when the current rotating speed value is greater than the rotating speed value at the point B1 (for example, the rotating speed value currently runs at the point C1 on the optimal rotating speed torque curve), the control rotating speed and the torque simultaneously drop to directly reach the point B1, or the control rotating speed and the torque simultaneously drop to a specific rotating speed torque curve and then change to the point B1 along the specific rotating speed torque curve (namely, the control rotating speed and the torque value at the point B1 are changed), or the control rotating speed drops to the rotating speed value at the point B1 and then controls the torque to drop to the torque value at the point B1 (namely, the rotating speed is controlled to drop firstly, and then the torque is controlled to drop);
when the current rotating speed value is less than the rotating speed value at the point B1 (for example, the rotating speed value currently runs at the point D1 on the optimal rotating speed and torque curve), the control torque is reduced to the isopower curve between the point B1 and the point A1, and then the rotating speed and the torque are controlled to change to the point B1 along the isopower curve (namely, the torque is controlled to be reduced firstly, and then the torque and the rotating speed are controlled simultaneously);
when the current rotation speed value is equal to the rotation speed value at point B1 (e.g., point E1, which is currently operating on the optimal rotation speed torque curve), the control torque is decreased to the torque value at point B1.
As another example, when the limited power operation state or the discharge operation state is currently being performed, the first rotational speed and torque control unit 102 may perform the following operations to achieve control of the rotational speed and torque with the rotational speed value and the torque value at point B1 as target values:
when the current operation is performed at an arbitrary point F1 on the specific speed-torque curve (i.e., the current speed and torque are the speed and torque values at the point F1), the control speed and torque are changed from the point F1 to the point B1 along the specific speed-torque curve; for example, point F1 may be the limited power point at which it is currently located;
when the current operation is on an equal power curve between a point F1 and a point G1 on an optimal rotating speed torque curve (for example, the current operation is on a point H1 on the equal power curve), the control rotating speed and the torque are simultaneously reduced from the point H1 to the point B1 along the specific rotating speed torque curve;
when the current operation is carried out at a C1 point on an optimal rotating speed torque curve, the rotating speed value is greater than a B1 point, the rotating speed and the torque are controlled to simultaneously drop to a B1 point, or the rotating speed and the torque are controlled to simultaneously drop to a specific rotating speed torque curve and then change to a B1 point along the specific rotating speed torque curve, or the rotating speed is controlled to drop to the rotating speed value of a B1 point and then control the torque to drop to the torque value of a B1 point;
when the current operation is performed at a point D1 with the rotating speed value smaller than a point B1 on the optimal rotating speed and torque curve, the rotating speed and the torque are controlled to change to a point B1 along the equipower curve after the torque is controlled to drop to the equipower curve between a point B1 and a point A1;
when the current operation is at the E1 point, where the rotating speed value is equal to the B1 point, on the optimal rotating speed and torque curve, the control torque is reduced to the torque value at the B1 point.
Fig. 10 illustrates a block diagram of a control unit according to another exemplary embodiment of the present disclosure.
As shown in fig. 10, the control unit 10 may include a second target power value determination unit 103 and a second rotational speed torque control unit 104. Further, as an example, the control unit 10 may include a first target power value determination unit 101, a first rotational speed torque control unit 102, a second target power value determination unit 103, and a second rotational speed torque control unit 104.
Specifically, the second target power value determining unit 103 is configured to determine that the amplification is required to reach the second power value based on the received amplification operating instruction when the amplification operating instruction is received.
The second rotational speed and torque control unit 104 is configured to determine a point B2 on the specific rotational speed and torque curve corresponding to the second power value, and control the rotational speed and the torque by using the rotational speed value and the torque value at the point B2 as target values.
As an example, when currently in the normal operation state, the second rotation speed torque control unit 104 may perform the following operations to achieve control of the rotation speed and the torque with the rotation speed value and the torque value at point B2 as target values: when the whole power discharge process has the stored energy, controlling the rotating speed and the torque to change to a point B2;
when there is no reserve energy after the control rotational speed and torque change to any point C2 on the specific rotational speed torque curve during discharging, the control rotational speed and torque (i.e., the actual rotational speed value and the actual torque value) stay at the point C2, and the control torque target value is increased from the point C2 to the torque value at the point D2 on the optimum rotational speed torque curve (during which the rotational speed target value is kept unchanged), and then the control torque target value and the rotational speed target value are increased from the point D2 to the point a2 along the optimum rotational speed torque curve, and then the control torque target value and the rotational speed target value are changed from the point a2 to the point B2 along the equal power curve.
As another example, when the limited power operation state or the power discharge operation state is currently being performed, the second rotation speed torque control unit 104 may perform the following operations to achieve control of the rotation speed and the torque with the rotation speed value and the torque value at point B2 as target values:
when there is reserve energy throughout the discharge process, the control speed and torque (e.g., currently operating at power limit point E2) change along the specific speed-torque curve to point B2;
when no reserve energy exists after the control rotating speed and torque (for example, the control rotating speed and torque are changed from the operation at the power limit point E2 along the specific rotating speed torque curve) to any point C2 on the specific rotating speed torque curve in the power discharging process, the control rotating speed and torque stay at the point C2, the control torque target value is increased from the point C2 to the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are increased to the point A2 along the optimal rotating speed torque curve, and then the control torque target value and the rotating speed target value are changed from the point A2 to the point B2 along the equal power curve.
As an example, after the first rotational speed and torque control unit 102 controls the rotational speed and torque with the rotational speed value and the torque value at the point B1 as target values, when the current operation is at the point B1 and a primary frequency modulation command is not received, the first rotational speed and torque control unit 102 may decrease along with the wind speed, change the control rotational speed and torque from the point B1 along the equal power curve to the point a1 and then along the optimal rotational speed and torque curve, and then change the control rotational speed and torque along the optimal rotational speed and torque curve to the point B1 after increasing along the optimal rotational speed and torque curve to the point a1 and then along the equal power curve as the wind speed increases.
As an example, after the first rotational speed and torque control unit 102 controls the rotational speed and torque with the rotational speed value and torque value at point B1 as target values, when the current operation is at point B1 and a primary frequency up-regulation power command is received, the second target power value determination unit 103 may determine that the up-regulation power is required to the third power value based on the received primary frequency up-regulation power command; the second rotation speed and torque control unit 104 may control the rotation speed to remain unchanged and control the torque to increase until the power increases to the third power value.
As an example, after the first rotational speed and torque control unit 102 controls the rotational speed and torque with the rotational speed value and the torque value at point B1 as target values, when the current operation is at point B1 and a primary frequency down-power command is received, the first target power value determination unit 101 may determine that the power down to the fourth power value is required based on the received primary frequency down-power command; the first rotational speed and torque control unit 102 may control the rotational speed to be kept constant and control the torque to be decreased until the power is decreased to the fourth power value.
As an example, after the second speed and torque control unit 104 controls the speed to remain unchanged and controls the torque to increase until the power increases to the third power value, the second speed and torque control unit 104 may control the speed to remain unchanged and control the torque to decrease until the point B1, further control the speed and torque to decrease along the optimal speed and torque curve after changing along the equal power curve from the point B1 to the point a1, and then control the speed and torque to change along the equal power curve after increasing along the optimal speed and torque curve to the point a1 and then to the point B1 as the wind speed increases.
As an example, after the first rotational speed and torque control unit 102 controls the rotational speed to remain unchanged and controls the torque to decrease until the power decreases to the fourth power value, the first rotational speed and torque control unit 102 may control the rotational speed and torque to decrease along the optimal rotational speed and torque curve after the control rotational speed and torque are changed along the equal power curve to the optimal rotational speed and torque curve as the wind speed decreases, and then control the rotational speed and torque to increase along the optimal rotational speed and torque curve to a point a1 and then change along the equal power curve to a point B1 as the wind speed increases.
As an example, after the first rotational speed and torque control unit 102 controls the rotational speed and torque with the rotational speed value and torque value at point B1 as target values, when the power-limited operation state is currently in but operation cannot be maintained at point B1 and a primary frequency down power command is received, the first target power value determination unit 101 may determine that power down to a fifth power value is required based on the adjustment amount in the received primary frequency down power command and the current power; the first rotational speed and torque control unit 102 may control the rotational speed to remain unchanged and control the torque to decrease until the power decreases to a fifth power value.
As an example, the power control device of a wind park according to an exemplary embodiment of the present disclosure may be provided in a master controller of the wind park.
It should be understood that the specific processes performed by the power control apparatus of the wind turbine generator set according to the exemplary embodiment of the present disclosure have been described in detail with reference to fig. 1 to 7, and the details thereof will not be repeated here.
It should be understood that the various units in the power control apparatus of a wind park according to an exemplary embodiment of the present disclosure may be implemented as hardware components and/or software components. The individual units may be implemented, for example, using Field Programmable Gate Arrays (FPGAs) or Application Specific Integrated Circuits (ASICs), depending on the processing performed by the individual units as defined by the skilled person.
Exemplary embodiments of the present disclosure provide a computer-readable storage medium storing a computer program which, when executed by a processor, implements the power control method of a wind turbine generator set as described in the above exemplary embodiments. The computer readable storage medium is any data storage device that can store data which can be read by a computer system. Examples of computer-readable storage media include: read-only memory, random access memory, read-only optical disks, magnetic tapes, floppy disks, optical data storage devices, and carrier waves (such as data transmission through the internet via wired or wireless transmission paths).
The power control apparatus of a wind turbine generator set according to an exemplary embodiment of the present disclosure includes: a processor (not shown) and a memory (not shown), wherein the memory stores a computer program which, when executed by the processor, implements the power control method of the wind park as described in the above exemplary embodiments.
Although a few exemplary embodiments of the present disclosure have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the disclosure, the scope of which is defined in the claims and their equivalents.
Claims (15)
1. A power control method of a wind generating set is characterized by comprising the following steps:
when a power-limiting operation instruction or a power-discharging operation instruction is received, controlling the rotating speed and the torque of a generator of the wind generating set based on the optimal rotating speed torque curve and the specific rotating speed torque curve;
and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
2. The power control method of claim 1, wherein the step of controlling the speed and torque of the generator of the wind turbine generator set based on the optimal speed torque curve and the specific speed torque curve when the power-limited operation command is received comprises:
when a power-limiting operation instruction is received, determining that the power is required to be limited to a first power value based on the received power-limiting operation instruction;
determining a point A on a specific rotating speed torque curve corresponding to the first power value;
and controlling the rotating speed and the torque by taking the rotating speed value and the torque value of the point A as target values.
3. The power control method according to claim 2, wherein the step of controlling the rotation speed and the torque with the rotation speed value and the torque value of the point a as target values comprises:
when the current running state is normal and the current rotating speed value is greater than the rotating speed value of the point A, controlling the rotating speed and the torque to simultaneously drop and directly reach the point A, or controlling the rotating speed and the torque to simultaneously drop to a specific rotating speed and torque curve and then change to the point A along the specific rotating speed and torque curve, or controlling the rotating speed to drop to the rotating speed value of the point A and then controlling the torque to drop to the torque value of the point A;
when the current running state is normal and the current rotating speed value is smaller than the rotating speed value of the point A, controlling the torque to fall onto an equal power curve between the point A and the point B, and then controlling the rotating speed and the torque to change to the point A along the equal power curve;
when the current rotating speed value is equal to the rotating speed value at the point A in the normal running state, the torque is controlled to be reduced to the torque value at the point A,
and the point B is a point on the optimal rotating speed torque curve, wherein the corresponding power value is the first power value.
4. The power control method according to claim 2, wherein the step of controlling the rotation speed and the torque with the rotation speed value and the torque value of the point a as target values comprises:
when the current running state is in a limited power running state or a power discharge running state and the current running state is at any point C on a specific rotating speed torque curve, controlling the rotating speed and the torque to change from the point C to a point A along the specific rotating speed torque curve;
when the current running is in a limited power running state or a power discharge running state and the current running is on an equal power curve between a point C and a point on an optimal rotating speed torque curve, controlling the rotating speed and the torque to simultaneously drop to a specific rotating speed torque curve and then change to a point A along the specific rotating speed torque curve;
when the current power-limiting operation state or the power-discharging operation state is in, and the current operation is at a point on the optimal rotating speed torque curve, the rotating speed and the torque are controlled to simultaneously drop and directly reach the point A, or the rotating speed and the torque are controlled to simultaneously drop to a specific rotating speed torque curve and then change to the point A along the specific rotating speed torque curve, or the rotating speed is controlled to drop to the rotating speed value of the point A and then control the torque to drop to the torque value of the point A;
when the current running is in a power-limited running state or a power-discharging running state and the current running is at a point on an optimal rotating speed and torque curve, wherein the rotating speed value is smaller than a point A, the torque is controlled to be reduced to an equal power curve between the point A and a point B, and then the rotating speed and the torque are controlled to be changed to the point A along the equal power curve;
when the motor is currently in a power-limited operation state or a power-discharge operation state and is currently operated at a point on an optimal rotating speed and torque curve, the rotating speed value is equal to the point A, the torque is controlled to be reduced to the torque value of the point A,
and the point B is a point on the optimal rotating speed torque curve, wherein the corresponding power value is the first power value.
5. The power control method of claim 1, wherein the step of controlling the rotation speed and the torque of the generator of the wind turbine generator set based on the optimal rotation speed torque curve and the specific rotation speed torque curve when the discharging operation command is received comprises:
when a power amplification operation instruction is received, determining that the power amplification is required to reach a second power value based on the received power amplification operation instruction;
determining a point D on a specific rotating speed torque curve corresponding to the second power value;
and controlling the rotating speed and the torque by taking the rotating speed value and the torque value of the point D as target values.
6. The power control method according to claim 5, wherein the step of controlling the rotation speed and the torque with the rotation speed value and the torque value at the point D as target values comprises:
when the current power amplifier is in a normal operation state and the whole power amplifying process has reserve energy, controlling the rotating speed and the torque to change to a point D;
when the current state is in a normal operation state and no reserve energy exists after the control rotating speed and the torque are changed to any E point on a specific rotating speed torque curve in the power discharging process, the control rotating speed and the torque stay at the E point, the control torque target value is increased to the optimal rotating speed torque curve from the E point, then the control torque target value and the rotating speed target value are increased to a F point along the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are changed to a D point along an equal power curve from the F point,
and the point F is a point on the optimal rotating speed torque curve, wherein the corresponding power value is the second power value.
7. The power control method according to claim 5, wherein the step of controlling the rotation speed and the torque with the rotation speed value and the torque value at the point D as target values comprises:
when the current power limiting operation state or the power discharge operation state is in and the whole power discharge process has the stored energy, controlling the rotating speed and the torque to change to a point D along a specific rotating speed and torque curve;
when the current power limiting operation state or the power discharging operation state is in and the power discharging process does not have reserve energy after the control rotating speed and the torque are changed to any E point on a specific rotating speed torque curve, the control rotating speed and the torque stay at the E point, the control torque target value is increased to the optimal rotating speed torque curve from the E point, then the control torque target value and the rotating speed target value are increased to a F point along the optimal rotating speed torque curve, then the control torque target value and the rotating speed target value are changed to a D point along the equal power curve from the F point,
and the point F is a point on the optimal rotating speed torque curve, wherein the corresponding power value is the second power value.
8. The power control method of claim 2, further comprising, after the step of controlling the speed and torque of the generator of the wind turbine generator set based on the optimal speed torque curve and the specific speed torque curve when the power-limited operation command is received:
when the wind speed is reduced when the wind power generator operates at the point A and a primary frequency modulation command is not received, the rotating speed and the torque are controlled to change from the point A to the point B along the equal power curve and then to reduce along the optimal rotating speed and torque curve, then the rotating speed and the torque are controlled to increase along the optimal rotating speed and torque curve to the point B and then to change to the point A along the equal power curve along with the increase of the wind speed, wherein the point B is a point of which the corresponding power value on the optimal rotating speed and torque curve is the first power value; and/or the presence of a gas in the gas,
when the current operation is at the point A and a primary frequency modulation power-up instruction is received, determining that the power needs to be increased to a third power value based on the received primary frequency modulation power-up instruction; controlling the rotating speed to keep unchanged and controlling the torque to rise until the power rises to a third power value; and/or the presence of a gas in the gas,
when the current operation is at the point A and a primary frequency modulation power reduction instruction is received, determining that the power needs to be reduced to a fourth power value based on the received primary frequency modulation power reduction instruction; controlling the rotating speed to keep unchanged and controlling the torque to decrease until the power decreases to a fourth power value; and/or the presence of a gas in the gas,
when the power is in a limited power operation state before and cannot be maintained to operate at the point A, and a primary frequency modulation power reduction instruction is received, determining that the power needs to be reduced to a fifth power value based on the adjustment quantity in the received primary frequency modulation power reduction instruction and the current power; the control speed is kept unchanged and the control torque is reduced until the power is reduced to a fifth power value.
9. The power control method of claim 8, further comprising:
after the step of controlling the rotating speed to be kept unchanged and controlling the torque to rise until the power rises to a third power value, along with the reduction of the wind speed, controlling the rotating speed to be kept unchanged and controlling the torque to fall until the point A is returned, then controlling the rotating speed and the torque to fall along the optimal rotating speed and torque curve after the point A is changed to the point B along the equal power curve, and then controlling the rotating speed and the torque to rise along the optimal rotating speed and torque curve and then change to the point A along the equal power curve after the point B is changed along the equal power curve along the increase of the wind speed; and/or the presence of a gas in the gas,
after the step of controlling the rotating speed to be kept unchanged and controlling the torque to be reduced until the power is reduced to a fourth power value, along with the reduction of the wind speed, the rotating speed and the torque are controlled to be reduced along the equal power curve to the optimal rotating speed and torque curve, then are reduced along the optimal rotating speed and torque curve, and along with the increase of the wind speed, the rotating speed and the torque are controlled to be increased along the optimal rotating speed and torque curve to a point B, and then are controlled to be changed along the equal power curve to a point A.
10. A power control device of a wind turbine generator set, characterized in that the power control device comprises:
the control unit is used for controlling the rotating speed and the torque of the generator of the wind generating set based on the optimal rotating speed torque curve and the specific rotating speed torque curve when receiving the power limiting operation instruction or the power discharging operation instruction;
and aiming at each point on the optimal rotating speed torque curve, forming a specific rotating speed torque curve by using the point as a starting point and a point on the equal power curve meeting a preset condition, wherein the preset condition is that the corresponding power value is lower than the power value corresponding to the point on the optimal rotating speed torque curve under the same rotating speed value by a preset value.
11. The power control apparatus according to claim 10, wherein the control unit includes:
the first target power value determining unit is used for determining that the power is required to be limited to a first power value based on the received power limiting operation instruction when the power limiting operation instruction is received;
and the first rotating speed and torque control unit determines a point A on a specific rotating speed and torque curve corresponding to the first power value, and controls the rotating speed and the torque by taking a rotating speed value and a torque value of the point A as target values.
12. The power control apparatus according to claim 10 or 11, characterized in that the control unit comprises:
the second target power value determining unit is used for determining that the amplification is required to be performed to a second power value based on the received amplification operation instruction when the amplification operation instruction is received;
and the second rotating speed and torque control unit determines a point D on a specific rotating speed and torque curve corresponding to the second power value, and controls the rotating speed and the torque by taking the rotating speed value and the torque value of the point D as target values.
13. A power control device according to claim 10 or 12, characterized in that the power control device is arranged in a master controller of a wind park.
14. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out a method for power control of a wind park according to any one of claims 1 to 9.
15. A power control device of a wind turbine generator set, characterized in that the power control device comprises:
a processor;
a memory storing a computer program which, when executed by the processor, implements the power control method of a wind park according to any one of claims 1 to 9.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011058738.5A CN114320741A (en) | 2020-09-30 | 2020-09-30 | Power control method and equipment of wind generating set |
| CA3194316A CA3194316A1 (en) | 2020-09-30 | 2020-12-11 | Wind turbine plant and power control method and device thereof |
| PCT/CN2020/135602 WO2022068068A1 (en) | 2020-09-30 | 2020-12-11 | Wind power generator set and power control method and device therefor |
| AU2020471015A AU2020471015B2 (en) | 2020-09-30 | 2020-12-11 | Wind power generator set and power control method and device therefor |
| EP20956085.3A EP4206460A4 (en) | 2020-09-30 | 2020-12-11 | Wind power generator set and power control method and device therefor |
| US18/247,189 US20230366376A1 (en) | 2020-09-30 | 2020-12-11 | Wind turbine plant and power control method and device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070069522A1 (en) * | 2005-09-29 | 2007-03-29 | General Electric Company | Wind turbine and method for operating same |
| US20130099495A1 (en) * | 2011-10-20 | 2013-04-25 | Sinovel Wind Group Co., Ltd. | Power control method and system for wind generating set |
| CN103187912A (en) * | 2011-12-29 | 2013-07-03 | 中国科学院沈阳自动化研究所 | Wind driven generator torque control method for passing through resonance band quickly |
| CN104074679A (en) * | 2014-07-02 | 2014-10-01 | 国电联合动力技术有限公司 | All-wind-speed limited-power optimal control method for variable-speed and variable-pitch wind generation set |
| CN104153941A (en) * | 2014-07-18 | 2014-11-19 | 新疆金风科技股份有限公司 | Fan limited-power operation control method, device and system |
| US20150159625A1 (en) * | 2013-12-11 | 2015-06-11 | General Electric Company | System and method for controlling a wind turbine system |
| CN105041567A (en) * | 2015-07-29 | 2015-11-11 | 广东明阳风电产业集团有限公司 | Light curtain optical lens system with microstructure |
| CN105909469A (en) * | 2016-04-29 | 2016-08-31 | 南京理工大学 | Power limiting control method for variable speed constant frequency wind turbine generator and capable of reducing variable pitch frequency |
| CN105909470A (en) * | 2016-04-15 | 2016-08-31 | 上海瑞伯德智能系统科技有限公司 | Self-adaption maximum power tracing control method of power generating set |
| CN105927469A (en) * | 2016-05-09 | 2016-09-07 | 北京金风科创风电设备有限公司 | Power limit control method and control device of wind generating set |
| US20190195189A1 (en) * | 2016-06-21 | 2019-06-27 | Power Enable Solutions Limited | Control or processing system and method |
| CN110529336A (en) * | 2019-09-06 | 2019-12-03 | 国电联合动力技术有限公司 | A kind of method and system that wind power generating set active power is quickly adjusted |
| US20190368465A1 (en) * | 2018-05-31 | 2019-12-05 | Ge Renewable Technologies Wind B.V. | Methods and Systems for Operating a Wind Turbine |
| CN111262256A (en) * | 2018-11-30 | 2020-06-09 | 北京金风科创风电设备有限公司 | Control method and device for primary frequency modulation of wind generating set |
| CN112392656A (en) * | 2019-08-16 | 2021-02-23 | 北京金风科创风电设备有限公司 | Power control method, apparatus and medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006054768A1 (en) * | 2006-11-16 | 2008-05-21 | Nordex Energy Gmbh | Method for operating a wind energy plant in power-limited operation |
| US8858174B2 (en) * | 2011-05-12 | 2014-10-14 | General Electric Company | Wind turbine torque-speed control |
| CN103174587B (en) * | 2011-12-26 | 2015-04-22 | 台达电子工业股份有限公司 | Wind power generation system and control method thereof |
| CN109973302B (en) * | 2017-12-28 | 2020-05-05 | 北京金风科创风电设备有限公司 | Power limiting control method and device for wind generating set |
-
2020
- 2020-09-30 CN CN202011058738.5A patent/CN114320741A/en active Pending
- 2020-12-11 US US18/247,189 patent/US20230366376A1/en active Pending
- 2020-12-11 EP EP20956085.3A patent/EP4206460A4/en active Pending
- 2020-12-11 CA CA3194316A patent/CA3194316A1/en active Pending
- 2020-12-11 WO PCT/CN2020/135602 patent/WO2022068068A1/en unknown
- 2020-12-11 AU AU2020471015A patent/AU2020471015B2/en active Active
Patent Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20070069522A1 (en) * | 2005-09-29 | 2007-03-29 | General Electric Company | Wind turbine and method for operating same |
| US20130099495A1 (en) * | 2011-10-20 | 2013-04-25 | Sinovel Wind Group Co., Ltd. | Power control method and system for wind generating set |
| CN103187912A (en) * | 2011-12-29 | 2013-07-03 | 中国科学院沈阳自动化研究所 | Wind driven generator torque control method for passing through resonance band quickly |
| US20150159625A1 (en) * | 2013-12-11 | 2015-06-11 | General Electric Company | System and method for controlling a wind turbine system |
| CN104074679A (en) * | 2014-07-02 | 2014-10-01 | 国电联合动力技术有限公司 | All-wind-speed limited-power optimal control method for variable-speed and variable-pitch wind generation set |
| CN104153941A (en) * | 2014-07-18 | 2014-11-19 | 新疆金风科技股份有限公司 | Fan limited-power operation control method, device and system |
| CN105041567A (en) * | 2015-07-29 | 2015-11-11 | 广东明阳风电产业集团有限公司 | Light curtain optical lens system with microstructure |
| CN105909470A (en) * | 2016-04-15 | 2016-08-31 | 上海瑞伯德智能系统科技有限公司 | Self-adaption maximum power tracing control method of power generating set |
| CN105909469A (en) * | 2016-04-29 | 2016-08-31 | 南京理工大学 | Power limiting control method for variable speed constant frequency wind turbine generator and capable of reducing variable pitch frequency |
| CN105927469A (en) * | 2016-05-09 | 2016-09-07 | 北京金风科创风电设备有限公司 | Power limit control method and control device of wind generating set |
| US20190195189A1 (en) * | 2016-06-21 | 2019-06-27 | Power Enable Solutions Limited | Control or processing system and method |
| US20190368465A1 (en) * | 2018-05-31 | 2019-12-05 | Ge Renewable Technologies Wind B.V. | Methods and Systems for Operating a Wind Turbine |
| CN111262256A (en) * | 2018-11-30 | 2020-06-09 | 北京金风科创风电设备有限公司 | Control method and device for primary frequency modulation of wind generating set |
| CN112392656A (en) * | 2019-08-16 | 2021-02-23 | 北京金风科创风电设备有限公司 | Power control method, apparatus and medium |
| CN110529336A (en) * | 2019-09-06 | 2019-12-03 | 国电联合动力技术有限公司 | A kind of method and system that wind power generating set active power is quickly adjusted |
Non-Patent Citations (4)
| Title |
|---|
| YINGJIE TAN ETAL.: "A Suboptimal Power-Point-Tracking-Based Primary Frequency Response Strategy for DFIGs in Hybrid Remote Area Power Supply Systems", IEEE TRANSACTIONS ON ENERGY CONVERSION, vol. 31, no. 1, 31 March 2016 (2016-03-31), pages 93 - 104, XP011599813, DOI: 10.1109/TEC.2015.2476827 * |
| 周志超;王成山;郭力;许伟;张彦涛;刘峻岐;: "变速变桨距风电机组的全风速限功率优化控制", 中国电机工程学报, no. 08 * |
| 娄尧林;蔡旭;叶杭冶;何国栋;: "基于转矩随动控制的风电机组最优发电研究", 电工技术学报, no. 08, 29 November 2017 (2017-11-29) * |
| 邬昌明;邵宜祥;芦健;: "风力发电机组大风下限功率运行控制方式分析", 工业控制计算机, no. 05, 25 May 2016 (2016-05-25) * |
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| Publication number | Publication date |
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| AU2020471015A1 (en) | 2023-05-25 |
| EP4206460A1 (en) | 2023-07-05 |
| CA3194316A1 (en) | 2022-04-07 |
| EP4206460A4 (en) | 2024-03-06 |
| WO2022068068A1 (en) | 2022-04-07 |
| US20230366376A1 (en) | 2023-11-16 |
| AU2020471015B2 (en) | 2024-07-11 |
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